Of all the strange worlds in our Milky Way galaxy, some of the most mysterious are those hanging around white dwarf stars.

Of all the strange worlds in our Milky Way galaxy, some of the most mysterious are those hanging around white dwarf stars.

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of our own solar system when the sun dies.